Pentax DA 50mm f/1.8 medium telephoto lens : Pentax Ricoh Imaging announce the introduction of its new smc Pentax-DA 50mm f/1.8 medium-telephoto autofocus lens, which is designed exclusively for use with the company’s K-mount interchangeable-lens (ILC) digital cameras. Thanks to state-of-the-art optical design technology from Pentax, the lens’ image coverage is optimized for Pentax K-mount ILC cameras to deliver sharp, clear images from edge to edge. With a sleek, modern look and a lightweight body, the new Pentax-DA 50mm f/1.8 lens was designed with versatility and flexibility in mind and is ideal for photographers of varying levels, from amateurs to professionals.